package example15;
class Animal {
    public void shout (){
        System.out.println("喵喵......");
    }
}
class Dog extends Animal {
    public void shout (){
        System.out.println("汪汪......");
    }
    public void eat (){
        System.out.println("吃骨头......");
    }
}
public class example15 {
    public static void main(String[] args) {
        Animal an = new Dog();
        an.shout();
    }
}
